Bow Ties in Risk Management
A Concept Book for Process Safety

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Language: Anglais

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224 p. · 15.9x23 cm · Hardback

From a collaborative effort of the Center for Chemical Process Safety (CCPS) and the Energy Institute (EI) comes an invaluable book that puts the focus on a specific qualitative risk management methodology – bow tie barrier analysis. The book contains practical advice for conducting an effective bow tie analysis and offers guidance for creating bow tie diagrams for process safety and risk management. Bow Ties in Risk Management clearly shows how bow tie analysis and diagrams fit into an overall process safety and risk management framework.

Implementing the methods outlined in this book will improve the quality of bow tie analysis and bow tie diagrams across an organization and the industry. This important guide:

  • Explains the proven concept of bow tie barrier analysis for the preventing and mitigation of incident pathways, especially related to major accidents
  • Shows how to avoid common pitfalls and is filled with real-world examples
  • Explains the practical application of the bow tie method throughout an organization
  • Reveals how to treat human and organizational factors in a sound and practical manner
  • Includes additional material available online

List of Tables
List of Figures
Acronyms and Abbreviations
Glossary
Acknowledgments
Online Materials Accompanying this Book
Preface

1 INTRODUCTION
1.1 Purpose
1.2 Scope and Intended Audience
1.3 Organization of this Concept Book
1.4 Introduction to the Bow Tie Concept
1.5 Conclusions

2 THE BOW TIE MODEL
2.1 Bow Tie Model Elements
2.2 Hazard
2.3 Top Event
2.4 Consequences
2.5 Threats
2.6 Barriers
2.7 Degradation actors and Degradation Controls
2.8 Conclusions

3 BOW TIE DEVELOPMENT
3.1 Rationale for Bow Tie Development
3.2 Bow Tie workshop
3.3 Postow Tie Workshop Activities and Quality Checks
3.4 Conclusions

4 ADDRESSING HUMAN FACTORS IN BOW TIE ANALYSIS
4.1 Human and Organiational Factors Fundamentals
4.2 Standard and MultiLevel Bow Tie Approaches
4.3 Human and Organiational Factors as a Barrier or Degradation Control
4.4 Validating Human Performance in Barriers and Degradation Controls
4.5 Quantifying Human Reliability in Bow Ties
4.6 Conclusions

5 PRIMARY USES OF BOW TIES
5.1 Primary Use Examples
5.2 Linking Bow Ties to the Risk Management System
5.3 Communication of Major Accident Scenarios and Degradation Controls
5.4 Use of Bow Ties in Design and Operations
5.5 Identification of Safety Critical Information
5.6 Conclusions

6 BARRIER MANAGEMENT PROGRAM
6.1 Barrier Management Strategy
6.2 Barrier and Degradation Control Management Program
6.3 Organizational Learning
6.4 Conclusions

7 ADDITIONAL USES OF BOW TIES
7.1 Additional Use Examples
7.2 Linking Bow Ties to HAZOP, LOPA and SIL
7.3 Integrating Bow Ties into ALARP Demonstrations
7.4 Operationalizing Bow Ties (MOPO / SOOB)
7.5 Incident Investigation using Bow Ties
7.6 Real-time Dashboards using Bow Ties
7.7 Barrier and Degradation Control Verification
7.8 Bow Tie Chaining
7.9 Enterprise-wide Analysis and Window on Systemic Risks
7.10 Conclusions

APPENDIX A – SOFTWARE TOOLS
Software used for Bow Tie Diagrams

APPENDIX B – CASE STUDY
Introduction
Volatile Hydrocarbons under Pressure in a Pipeline

APPENDIX C – MULTI-LEVEL BOW TIES
Multilevel Bow Tie for Tank Overfill
References
Index

Although this book is written primarily for anyone involved with or responsible for managing process safety risks, this book is applicable to anyone using bow tie risk management practices in other safety and environmental or Enterprise Risk Management applications. It is designed for a wide audience, from beginners with little to no background in barrier management, to experienced professionals who may already be familiar with bow ties, their elements, the methodology, and their relation to risk management.
The Center for Chemical Process Safety (CCPS) has been the world leader in developing and disseminating information on process safety management and technology since 1985. The CCPS, an industry technology alliance of the American Institute of Chemical Engineers (AIChE), has published over 100 books in its process safety guidelines and process safety concepts series, and over 10 training modules through its Safety in Chemical Engineering Education (SAChE) series.
The missions of both the CCPS and EI include developing and disseminating knowledge, skills, and good practices to protect people, property and the environment by bringing the best knowledge and practices to industry, academia, governments and the public around the world through collective wisdom, tools, training and expertise. The CCPS has been at the forefront of documenting and sharing important process safety risk assessment methodologies for more than 30 years. The EI's Technical Work Program addresses the depth and breadth of the energy sector, from fuels and fuels distribution to health and safety, sustainability and the environment. The EI program provides cost-effective, value-adding knowledge on key current and future international issues affecting those in the energy sector.